Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-2-25
pubmed:abstractText
A novel sialoglycoprotein with an apparent molecular mass of approximately 250 kDa was detected on the surface of cysts of Entamoeba invadens. Sialic acid was identified in this glycoprotein by gas chromatography after methanolysis; N-acetyl- and N-glycolyl neuraminic acid were identified by thin layer chromatography in hydrolysates of partially purified preparations of the 250 kDa glycoprotein as well as in whole cysts. The sialoglycoprotein is stage-specific and could be detected by binding of wheat germ agglutinin and a specific monoclonal antibody (JAM3) only to precysts and mature cysts but not to trophozoites. A 250 kDa protein could be metabolically labeled with [35S]methionine. This, together with the absence of such a glycoprotein in the encystation medium, suggests that the 250 kDa sialoglycoprotein is not an adsorbed serum glycoprotein. Indirect evidence suggests that the parasite may utilize serum components as a source for sialic acid.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0166-6851
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
257-66
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
A stage-specific sialoglycoprotein in encysting cells of Entamoeba invadens.
pubmed:affiliation
Department of Biophysics, Weizmann Institute of Science, Rehovot, Israel.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't